1990746 has 12 divisors (see below), whose sum is σ = 4313322. Its totient is φ = 663576.

The previous prime is 1990693. The next prime is 1990753. The reversal of 1990746 is 6470991.

It can be written as a sum of positive squares in only one way, i.e., 1535121 + 455625 = 1239^2 + 675^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1990746.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55281 + ... + 55316.

2^1990746 is an apocalyptic number.

1990746 is an abundant number, since it is smaller than the sum of its proper divisors (2322576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1990746 is a wasteful number, since it uses less digits than its factorization.

1990746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110605 (or 110602 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 1990746 is about 1410.9379858803. The cubic root of 1990746 is about 125.7974826844.

The spelling of 1990746 in words is "one million, nine hundred ninety thousand, seven hundred forty-six".